Using 3D Glasses to Study Stereopsis in Cuttlefish's Depth Perception

It's time for some #scicomm all about Cuttlefish vision! How exactly do Cuttlefish handle depth perception? It's pretty clear that they're able to see things in 3d using our own observations - they're able to catch a fish swimming in 3d space well enough. But how do they do it? Can they see in 3d like we can? That's what this team of scientists wanted to find out - can Cuttlefish use stereopsis to help with their 3d vision and depth perception? What is going on in their brains?

The research team built little sets of 3d glasses to put onto their Cuttlefish and then ran them through a series of tests using colored shrimp presented on a computer screen near their tank. While we usually don't see Cuttlefish in reef tanks, they are incredibly intelligent animals like most cephlapods are - think of all the neat tricks you've seen an octopus figure out.

Thank you again to the research team who provided the photos and video I showed during this video.

Cuttlefish use stereopsis to strike at prey
https://doi.org/10.1126/sciadv.aay6036
R. C. Feord, M. E. Sumner, S. Pusdekar, L. Kalra, P. T. Gonzalez-Bellido, and Trevor J. Wardill

And here is the paper about the similar study in preying mantises.

Insect stereopsis demonstrated using a 3D insect cinema.
https://www.ncbi.nlm.nih.gov/pubmed/2...
Nityananda V, Tarawneh G, Rosner R, Nicolas J, Crichton S, Read J.

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